Thanks again, @dannyfritz!

I think this is one of those rules which should be implemented with the familiar ESLint "always" vs "never" config:

E.g. http://eslint.org/docs/rules/semi#always

The precedent is also there with the TSLint rule you have referenced.

Thanks for adding the options in!

Now, looking at the implementation, I think we might be better off drawing stronger inspiration from how it is currently done in TSLint: https://github.com/palantir/tslint/blob/d25842e372cbb3ca8ee1f724b5714725d86fb316/src/rules/interfaceNameRule.ts#L55-L105

We are only ever concerned with the first one or two characters of the string, so a RegExp seems overkill.

A final, minor point - TypeScript's official stance on the I prefix is actually not to use it https://github.com/Microsoft/TypeScript/wiki/Coding-guidelines, so could we please go for "never" as the default to match up with that?